Once per turn: You can toss a coin and call Heads or Tails. If you call it right, double this card's ATK during this turn. If you call it wrong, halve its ATK during this turn.
Rulings
Netrep Rulings
The effect of “Goddess of Whim” may be used once per the controlling player's turn.
“Goddess of Whim's” effect is an activated effect and is Spell Speed 1.
LIGHT|
Level 3|[ Fairy / Effect ]
ATK 950|
DEF 700